Hadithcore
Mishkat al-Masabih, 3917

Anas said:

When we encamped we did not glorify God* till we had loosened the saddles. * This is explained as meaning to perform the <i>salat</i>. Cf. <i>Mirqat</i>, iv, 218. Abu Dawud transmitted it.

وَعَن أنسٍ قَالَ: كُنَّا إِذَا نَزَلْنَا مَنْزِلًا لَا نُسَبِّحُ حَتَّى نحُلَّ الرِّحالَ. رَوَاهُ أَبُو دَاوُد

References1 variant
In-Book Reference
Book 19, Hadith 129